17-82171744-A-T

Position:

• chr17-82171744-A-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001394669.1(CCDC57):​c.1839T>A​(p.His613Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CCDC57 NM_001394669.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.18

Genes affected

CCDC57 (HGNC:27564): (coiled-coil domain containing 57) Involved in several processes, including G2/M transition of mitotic cell cycle; cilium assembly; and microtubule cytoskeleton organization. Located in centriolar satellite; centriole; and spindle microtubule. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.060187638).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CCDC57	NM_001394669.1	c.1839T>A	p.His613Gln	missense_variant	12/19	ENST00000694881.1	NP_001381598.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCDC57	ENST00000694881.1	c.1839T>A	p.His613Gln	missense_variant	12/19		NM_001394669.1	ENSP00000511565	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 02, 2022

The c.1839T>A (p.H613Q) alteration is located in exon 12 (coding exon 11) of the CCDC57 gene. This alteration results from a T to A substitution at nucleotide position 1839, causing the histidine (H) at amino acid position 613 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.39	T
BayesDel_noAF	Benign	-0.81
CADD	Benign	0.034
DANN	Benign	0.56
DEOGEN2	Benign	0.0016	T;T;.
Eigen	Benign	-1.6
Eigen_PC	Benign	-1.7
FATHMM_MKL	Benign	0.030	N
LIST_S2	Benign	0.23	.;T;T
M_CAP	Benign	0.0023	T
MetaRNN	Benign	0.060	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	L;L;L
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.19	T
PROVEAN	Benign	-1.4	N;N;N
REVEL	Benign	0.028
Sift	Benign	0.29	T;T;T
Sift4G	Benign	0.36	T;T;T
Polyphen		0.0030	B;B;B
Vest4		0.12
MutPred		0.092		Loss of glycosylation at P612 (P = 0.1515);Loss of glycosylation at P612 (P = 0.1515);Loss of glycosylation at P612 (P = 0.1515);
MVP		0.14
MPC		0.12
ClinPred		0.17	T
GERP RS		-6.0
Varity_R		0.035
gMVP		0.039

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs763516356; hg19: chr17-80129620;